Abutment for a knife blade



FIG. 1 is a perspective view of an abutment for a knife blade, showing my new design thereof;

FIG. 2 is a left side elevational view, the right side view being identical thereto;

FIG. 3 is a front elevational view, the rear view being identical thereto;

FIG. 4 is a top plan view; and,

FIG. 5 is a bottom plan view.

Broken lines appearing in the drawings are not claimed material and are intended to show the environment of the claimed design. 

The ornamental design for an abutment for a knife blade, as shown and described. 